package com.wzn;

public class Test3333 {
	int a = 10;
	int b = 15;

	public static void main(String args[]) {
		Test3333 test = new Test3333();
		ex(test);
		System.out.println("a=" + test.a + "   ,   b=" + test.b);
	}

	public static void ex(Test3333 test) {
		int t=test.a;
		test.a = test.b;
		test.b = t;
	}
}
